Patents by Inventor Roger Nylund

Roger Nylund has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Procedure for controlling a rock drill and rock drill for carrying out the procedure
    Patent number: 3971449
    Abstract: An arrangement for controlling the drilling functions of a full profile rock drill in which the speed of rotation of the cutting head and the feed force of the cutting head are controlled so that the rate of penetration of the drill bit reaches its optimum rate as a function of the feed force. The full profile of drilling apparatus has a part of the cutting head in which cutters are freely rotatable. The change of the rate of penetration of the cutting head into the rock is measured during the drilling operation, and the drilling functions are controlled on the basis of the measured results so that the cutting head feed force is either increased or decreased.
    Type: Grant
    Filed: October 9, 1974
    Date of Patent: July 27, 1976
    Assignee: Oy Tampella AB
    Inventors: Roger Nylund, Aulis Holmala